This is the 3149th most frequent Chinese word.
串
"串" (chuàn): to string together; skewered items; a string or cluster.
Used as a measure word for a bunch of items or objects connected together, such as grapes.
我买了一串葡萄。
I bought a bunch of grapes.
Used metaphorically to mean connecting or threading together thoughts or concepts.
那件事在我脑海中串成了一条线。
That matter has formed a line in my mind.
Used to refer to objects linked by skewering, such as candies on a stick.